Got a question about tall deck blocks. Do I need custom headers ? or can i reuse the stand height block headers ? Before you ask I've got a 1968 Camaro thats been converted to right hand drive ( I live in Australia) its mark IV 454 and has hooker 2 inch headers (that I modified for the steering) and a 2 inch cowl hood. i've been thinking about buying one of them 572 crate motors.